With all of that said, here are three shots from this afternoon, each of which required cropping. These blackbirds showed up before any geese, gulls, or herons.
I had almost given up on seeing any Great Blue Herons when this one soared across the opposite end of the lake.
I had about decided I wouldn't see any more interesting wildlife at all, and was headed home when this cardinal landed in a nearby tree and played hide and seek amid the branches.
[All photos Canon EF 300mm f/2.8 L IS II with Extender 2X III]